(561) 691-4552 • (407) 777-4552 info@johnstongroupinc.com

Celebrating our 15th Year of Unparalleled Service

Ryan Johnston is a great entitlement professional and consultant. I highly recommend him for anybody in the real estate game.

Steve Gravett
Kennedy Homes, LLC

Recent Projects


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About Johnston Group

Ryan JohnstonRyan B. Johnston
President / Principal

P:  561.691.4552
F:  561.691.4553
E:  Ryan@JohnstonGroupInc.com

224 Chimney Corner Lane, Suite 3032
Jupiter, Florida  33458

View Ryan Johnston's profile on LinkedIn

Ryan Johnston, President and Principal of Johnston Group, has more than 20 years of experience in the development industry and is recognized for his active participation in real estate development projects with a total gross volume of over 2 billion dollars. Starting his career in the City of West Palm Beach Planning Services Department, Mr. Johnston moved into the private sector in 1998 to lead the newly formed land planning division of a local landscape architecture firm. In early 2000, Mr. Johnston joined Palm Beach Gardens-based Catalfumo Construction and Development, Inc., starting his career there as Government Liaison and working his way up to Senior Vice President of Land Development.

Mr. Johnston founded Johnston Group Development & Design, Inc. in 2005 to provide freelance development project management services for the development and construction industry. Johnston Group has since amassed a substantial portfolio of successfully completed projects throughout Florida and has grown to include a full suite of services including development, design, entitlements, construction and real estate. The firm provides turn-key development and construction services ranging from site selection and acquisition through complete project design, approvals, permitting and construction.


Seth FordSeth A. Ford
Executive Vice President

P:  561.691.4552
F:  561.691.4553
E:  Seth@JohnstonGroupInc.com

224 Chimney Corner Lane, Suite 3032
Jupiter, Florida  33458

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Seth Ford is a dynamic professional with over 25 years of construction management,
architectural and structural design experience in a variety of business environments. Seth
is a graduate of Palm Beach State College where he earned his Associate of Arts degree.
He spent six (6) years working for Palm Beach Gardens-based Catalfumo Construction
& Development, Inc. from 1999 – 2005 where he was instrumental in the completion of
several high-profile projects. Skilled in developing and maintaining lasting relationships
with clients, Seth has solid organizational skills with the ability to meet multiple time
sensitive deadlines. His creative thinking, high standards, attention to detail, level of
perseverance, integrity and ethics have earned him the respect of many clients and
industry colleagues. He has been a State of Florida Certified General Contractor since
2000, holds a State of Florida Structural Building Inspector license and is a certified
Coastal Construction Inspector.


Nathan AleskovskyNathan M. Aleskovsky, NCARB
Vice President / Architect

P:  407.777.4552
F:  561.691.4553
E:  Nathan@JohnstonGroupInc.com

37 N. Orange Avenue, Suite 500
Orlando, Florida  33801

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Nathan Aleskovsky, NCARB, has more than 15 years of design experience across multiple
industries. He has a passion for excellence in design and enjoys partnering with clients to
meet their vision with a keen attention to detail. With a Bachelor’s degree from the
University of Florida in Architectural Design, Nathan earned both a Master of
Architecture degree and a Master of Science degree in Entrepreneurship and Emerging
Enterprises from Syracuse University. Nathan subsequently joined the architecture and
engineering firm of Baker, Bednar, Snyder & Associates in northeast Ohio where he
quickly rose to the position of Project Architect. He was responsible for designing and
managing commercial, residential, industrial, and health care projects for numerous
clients including Akron Children’s Hospital, and Stark State College. After several years working in Ohio, Nathan returned to Florida and joined Johnston Group Development & Construction to establish and manage the firm’s Orlando division. Nathan is a licensed and registered architect in both Ohio and Florida and holds a current NCARB certification.  He is also skilled in website and graphic design.


Tara JohnstonTara Lynn Johnston
Development Manager

P:  561.691.4552
F:  561.691.4553
E:  Tara@JohnstonGroupInc.com

224 Chimney Corner Lane, Suite 3032
Jupiter, Florida  33458

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Tara joined the firm in 2015 as a Development Associate. Prior to becoming part of the
Johnston Group team, Tara spent 20 years at TaxServ Capital Services and its subsidiary
where she served as the firm’s Vice President and Servicing Manager. Her extensive
experience in real estate, consulting and customer service brings immense value to
Johnston Group’s Development Division. As a creative and inventive thinker who craves
challenge, Tara is never afraid to work outside of her comfort zone. She’s a motivated
professional who possesses superb communication skills and she quickly builds strong
relationships with the firm’s clients, finding out their exact needs, determining feasible
solutions to overcoming obstacles, and delivering a solid work product. Tara’s
educational background is in Business Management and Business Administration.


Greg SiefkerGreg Siefker
Construction Manager

P:  561.691.4552
F:  561.691.4553
E:  Greg@JohnstonGroupInc.com

224 Chimney Corner Lane, Suite 3032
Jupiter, Florida  33458

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Greg Siefker is a seasoned veteran of the Florida construction industry. He started in the
industry at a young age while working for his father’s construction company completing
residential and commercial projects. Greg attended the University of Florida and earned
his Associates of Arts degree and a Bachelor of Arts in Building Construction. After
graduation, Greg joined Eckerd Corporation where he was responsible for the South
Florida market including maintenance, renovations and new store development for a
278-store region. Greg’s experience in private commercial real estate development
provided him with exceptional skills in managing numerous projects from concept
through completion with full responsibility for budget and schedule. Greg eventually
transitioned to CBRE where customer service and client delivery were the keys to his
11-year tenure leading the company’s South Florida project management teams. In the
capacity of Construction Manager for Johnston Group, Greg’s 34 years of experience is
a vital asset in the delivery of the firm’s projects.


Jason LitterickJason Litterick, ASLA
Landscape Architect

P:  561.691.4552
F:  561.691.4553
E:  Jason@JohnstonGroupInc.com

224 Chimney Corner Lane, Suite 3032
Jupiter, Florida  33458

View Greg Siefker's profile on LinkedIn

Jason Litterick has over 30 years of experience in the landscape industry dating back to
when he owned and operated a small landscape maintenance company in Orange Park,
Florida. With hard work and determination, Jason put himself through college at the
University of Florida where he received a Bachelor of Landscape Architecture degree.
Following graduation, Jason started work as an associate at the Jupiter-based landscape
architecture firm of George G. Gentile and Associates, Inc. where he practiced as a
Landscape Architect for 17 years. During his tenure with the firm, he was appointed to
the position of Project Manager and led a design team to complete multiple projects
ranging from single-family residential to large-scale planning projects. In 2013, Jason
founded Litterick Landscape Architecture to provide landscape architectural design
services for an array of clients including both private and public entities. Jason formed a
strategic alliance with Johnston Group Development & Construction in 2014 and
provides site, hardscape, landscape, lighting and irrigation design for many of the firm’s
single- and multi-family residential and commercial development projects.


Jonathan FlahJonathan Flah
Business Development Executive

P:  561.691.4552
F:  561.691.4553
E:  Jonathan@JohnstonGroupInc.com

224 Chimney Corner Lane, Suite 3032
Jupiter, Florida  33458

View Greg Siefker's profile on LinkedIn

Born in Syracuse, New York and a resident of Palm Beach County since 1978, Jonathan
is a seasoned business development professional who has consistently proven himself in
South Florida’s construction industry. Prior to joining Johnston Group in 2019, Jonathan
spent 5 years working for Sisca Construction Services and was instrumental in growing
the firm’s portfolio of completed work through the development of strong client
partnerships. With a passion for sales and client relations, Jonathan’s core responsibility
is the introduction of Johnston Group Development & Construction’s unique suite of
services to potential clients and developing long-term relationships. He is actively
involved in several community and business organizations including the Northern Palm
Beach County Chamber of Commerce, PGA Corridor Association, SouthTech Academy
and the Jewish Federation of Palm Beach County.